de Souza Eduardo Oliveira, Tricoli Valmor, Franchini Emerson, Paulo Anderson Caetano, Regazzini Marcelo, Ugrinowitsch Carlos
Department of Sport, School of Physical Education and Sport, University of São Paulo, São Paulo, SP, Brazil.
J Strength Cond Res. 2007 Nov;21(4):1286-90. doi: 10.1519/R-20686.1.
The purpose of this study was to evaluate the effects of 2 modes of aerobic exercise (continuous or intermittent) on maximum strength (1 repetition maximum, 1RM) and strength endurance (maximum repetitions at 80% of 1RM) for lower- and upper-body exercises to test the acute hypothesis in concurrent training (CT) interference. Eight physically active men (age: 26.9 +/- 4.2 years; body mass: 82.1 +/- 7.5 kg; height: 178.9 +/- 6.0 cm) were submitted to: (a) a graded exercise test to determine V(.-)O2max (39.26 +/- 6.95 ml x kg(-1) x min(-1)) and anaerobic threshold velocity (3.5 mmol x L(-1)) (9.3 +/- 1.27 km x h(-1)); (b) strength tests in a rested state (control); and (c) 4 experimental sessions, at least 7 days apart. The experimental sessions consisted of a 5-kilometer run on a treadmill continuously (90% of the anaerobic threshold velocity) or intermittently (1:1 minute at V(.-)O2max). Ten minutes after the aerobic exercise, either a maximum strength or a strength endurance test was performed (leg press and bench press exercises). The order of aerobic and strength exercises followed a William's square distribution to avoid carryover effects. Results showed that only the intermittent aerobic exercise produced an acute interference effect on leg strength endurance, decreasing significantly (p < 0.05) the number of repetitions from 10.8 +/- 2.5 to 8.1 +/- 2.2. Maximum strength was not affected by the aerobic exercise mode. In conclusion, the acute interference hypothesis in concurrent training seems to occur when both aerobic and strength exercises produce significant peripheral fatigue in the same muscle group.
本研究的目的是评估两种有氧运动模式（持续或间歇）对上下肢运动的最大力量（1次重复最大值，1RM）和力量耐力（1RM的80%时的最大重复次数）的影响，以检验同期训练（CT）干扰中的急性假设。八名身体活跃的男性（年龄：26.9±4.2岁；体重：82.1±7.5千克；身高：178.9±6.0厘米）接受了以下测试：（a）分级运动测试以确定最大摄氧量（V̇O₂max）（39.26±6.95毫升·千克⁻¹·分钟⁻¹）和无氧阈速度（3.5毫摩尔·升⁻¹）（9.3±1.27千米·小时⁻¹）；（b）静息状态下的力量测试（对照）；以及（c）4次实验环节，每次间隔至少7天。实验环节包括在跑步机上持续进行5公里跑步（无氧阈速度的%）或间歇进行（在V̇O₂max下1:1分钟）。有氧运动10分钟后，进行最大力量或力量耐力测试（腿举和卧推练习）。有氧和力量练习的顺序遵循威廉姆斯方阵分布以避免遗留效应。结果显示，只有间歇有氧运动对腿部力量耐力产生了急性干扰效应，重复次数从10.8±2.5显著减少（p<0.05）至8.1±2.2。最大力量不受有氧运动模式的影响。总之，当有氧和力量练习在同一肌肉群中产生显著的外周疲劳时，同期训练中的急性干扰假设似乎会发生。
